Question 1

The Thar Desert, located in northwestern India, receives very low annual rainfall. What is the approximate annual rainfall range in this region?

Accepted Answer

The Thar Desert in Rajasthan receives less than 50 cm of annual rainfall, with some areas receiving as little as 10-15 cm. This makes it one of the driest regions in India and is classified as an arid climate zone.

Question 2

Which of the following soil types is predominantly found in the Deccan Plateau region of India?

Accepted Answer

The Deccan Plateau is characterized by black soil (regur soil), which is formed from the weathering of basaltic lava flows. This soil is rich in iron oxide and alumina, making it highly fertile for cotton cultivation.

Question 3

The monsoon climate of India is characterized by seasonal reversal of winds. Which wind system brings the majority of rainfall to the Indian subcontinent during summer?

Accepted Answer

The Southwest Monsoon (also called the Summer Monsoon) is the primary wind system responsible for bringing approximately 80% of India's annual rainfall between June and September. It originates from the Indian Ocean and Arabian Sea.

Question 4

Which of the following regions in India receives the highest annual rainfall and is classified as a tropical rainforest climate zone?

Accepted Answer

The Western Ghats, particularly the Malabar Coast region (Kerala and parts of Karnataka), receives the highest annual rainfall in India, with some areas receiving over 600 cm annually. This region has a tropical rainforest climate.

Question 5

Laterite soil is primarily formed in regions with high temperature and high rainfall. In which climatic zone is this soil type most commonly found in India?

Accepted Answer

Laterite soil is formed in tropical and subtropical regions with high temperature and high rainfall, where intense weathering occurs. In India, it is predominantly found in the Western Ghats, Nilgiris, and other high-rainfall areas of peninsular India.

Question 6

Which of the following soil types is predominantly found in the Deccan Plateau region of India and is formed due to the weathering of basaltic lava flows?

Accepted Answer

Black soil (also called regur or cotton soil) is the correct answer. It is formed from the weathering of basaltic lava flows and is predominantly found in the Deccan Plateau, particularly in Maharashtra, Karnataka, Madhya Pradesh, and Gujarat. This soil is rich in iron oxide and alumina, making it highly fertile and ideal for cotton cultivation.

Question 7

Which of the following regions in India receives the maximum rainfall due to orographic precipitation caused by the Western Ghats?

Accepted Answer

The Western Ghats act as a barrier to the Southwest Monsoon winds, forcing them to rise and cool, resulting in heavy precipitation on the windward side. The Malabar Coast (Kerala and Karnataka coast) and the Western Ghats slopes receive the highest rainfall in India, with some areas receiving over 600 cm annually.

Question 8

The soil found in the Indo-Gangetic Plains is primarily formed by the deposition of sediments carried by rivers. What is this soil type called?

Accepted Answer

The Indo-Gangetic Plains are covered with alluvial soil, which is formed by the deposition of fine sediments (silt, clay, and sand) carried by rivers like the Ganges, Brahmaputra, and their tributaries. This soil is highly fertile and supports intensive agriculture.

Question 9

Which climatic zone in India experiences the lowest temperature during winter and receives snowfall in the higher altitudes?

Accepted Answer

The Alpine/Mountain climate zone, found in the Himalayas and high-altitude regions above 2,400 meters, experiences very low temperatures during winter and receives significant snowfall. This region has short summers and long, severe winters with temperatures often dropping below freezing.

Question 10

The monsoon climate of India is characterized by seasonal reversal of winds. In which month does the Southwest Monsoon typically withdraw from most of India?

Accepted Answer

The Southwest Monsoon, which brings the majority of India's rainfall during summer (June-September), begins to withdraw in October. This withdrawal is called the 'Retreating Monsoon' phase, and by November, most of India experiences the Northeast Monsoon.

Question 11

Which of the following pairs correctly matches a soil type with its characteristic feature and primary geographic distribution in India?

Accepted Answer

Red soil is formed due to the weathering of granite and gneiss rocks in areas with moderate rainfall. It is rich in iron oxide (which gives it the red color) but deficient in nitrogen, phosphorus, and organic matter. Red soil is primarily found in the Deccan Plateau, particularly in Karnataka, Andhra Pradesh, and Tamil Nadu regions.

Question 12

Which of the following statements about the distribution and characteristics of laterite soil in India is CORRECT?

Accepted Answer

Laterite soil is formed in areas with high rainfall (above 200 cm annually) through intense weathering and leaching of rocks. It is rich in iron oxide and aluminum oxide but deficient in silica and nitrogen. Laterite soil is primarily found in high-rainfall regions such as the Western Ghats, Northeast India (Assam, Meghalaya), and parts of the Western coast. It is reddish-brown in color and hardens into a brick-like material (laterite) when exposed to air.

Question 13

Which of the following soil types in India is primarily formed due to intense weathering in high rainfall areas and is characterized by the leaching of silica and accumulation of iron and aluminium oxides?

Accepted Answer

Laterite soil is formed in tropical regions with high rainfall (above 200 cm annually) through intense chemical weathering. The process of laterization involves leaching of silica, potash, and lime, while iron oxide (Fe₂O₃) and aluminium oxide (Al₂O₃) accumulate, giving the soil its characteristic reddish-brown color. These soils are found extensively in Western Ghats, Deccan Plateau, and coastal regions of India. They are poor in nitrogen and phosphorus but rich in iron and aluminium.

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